In the four years since 2012, Goldman has "broadened the base of the employee pyramid," said Blankfein. "Headcount is up 17% for analysts and associates and down 2% for partners and MDs."

In other words, a higher proportion than previously of Goldman's staff are in their 20s; a lower proportion are aged 30 plus.

Goldman still accepts only 3% of applicants

Does this mean you'll be in with a greater chance of getting into Goldman as a youth? Not exactly. The firm's acceptance rate is still derisory: Blankfein said 313,000 people applied for 9,700 open positions in 2015, a ratio of 33:1 and acceptance rate of just 3%.

However, some people seem more likely to get hired by GS than others. Firstly, the young. Secondly, people based in 'low cost centers' (Singapore, Salt Lake City, Warsaw, Dallas and Bengaluru). Thirdly, technologists.

Young technologists based in low cost centers appear to be Goldman's sweet-spot. Blankfein said Goldman's technology headcount in Singapore, Salt Lake City, Warsaw, Dallas and Bengaluru has increased 31% since 2012. If you want to walk into Goldman Sachs now, you probably need to be a 25 year-old C++ programmer who's keen to live in Poland.